Summary statistics for icd2hccxw2007 dataset : by Jean Roth , jroth@nber.org , 12 Jan 2016 Variable | Obs Mean Std. Dev. Min Max -------------+--------------------------------------------------------- icd | 0 icddesc | 0 icdvers | 5,506 9 0 9 9 icddate | 5,506 11957.38 1778.985 11323 18171 hcc | 0 -------------+--------------------------------------------------------- rxhcc | 0 inhcc | 0 inrxhcc | 0 year | 5,506 2007 0 2007 2007 by Jean Roth , jroth@nber.org , 12 Jan 2016